白背飞虱Sogatella furcifera(Horvath)是我区近十年来早稻主要害虫之一,对一季中、晚稻和局部地区连晚的危害也较为严重。1977～1979年笔者曾作过一些调查研究,1980年以后又进一步作了室内饲养和田间系统观察,现将所得资料整理如下。材料和方法越冬观察晚稻收割后,选择残留虫量较多,而有再生稻的田3～5块以及避风向 Sogatella furcifera (Horvath) is one of the major pests of early rice in the past ten years in our region. It also harms even late rice and some parts of the country late in the season. From 1977 to 1979, the author made some investigations and studies. After 1980, he made further observations on indoor rearing and field systems. The data obtained are now compiled as follows. Materials and methods Observe the late winter after harvesting rice, choose more residual insect population, and there are 3 to 5 fields of ratoon rice and shelter